Antifriction bearing



Nov. 8, 1927.

1,648,271 S. B. HASELTINE ANTIFRICTION BEARING Filed Jan. 18. 1924 fag! IH l|`l\ 'Unull /f j f/ -1 W ,l Il' l I' l Patented Nov. 8, 1927.

U ira er' -Y STACY B. HASLTINE, OIE` CIICAGO, ILLINOIS, lIILSSIGNOR, BY MESNE ASSIGNMENTS, T0 W. H. MINER, INC., AVCORPORATION OF DELAWARE. l

ANTIFRIGTION enfantine.

Application filed January 18, 1924. 'Serial No.y 686,951.

This invention relates to improvements in antifriction bearings. t

One of the objects of the invention 1s to provide asimple, practical and economicall roller bearing especially adapted for use as railway car side bearingsV and wherein is employed an anti-friction roller that is self- -cent-ered without the aid of springs or other relatively delicate parts that are likely to get out of order. -IMore specifically, an object of the invention is to provide an anti-frictionv roller side bearing for railway cars, having comparatively few parts and including an anti-friction roller and'means for guiding and centering the same.

y@ther objects and advantages of the 1nvention will be more clearly apparent from the description' and claims hereinafter following.

In the drawing forming a part of this specification, Figure 1 is a vertical sectional View taken transversely through the ends of the body and truck 'bolster of a car, showing my improvements in connection therewith.l And Figure 2 is a vertical sectional view taken substantially on t-he line 2-2 of Figure 1. Y

In saiddrawing, 10 denotes the under side of the body bolster and 11 the upper side of the opposed truck bolster. The imroved bearingis shown as applied to the truck bolster and comprises, broadly, a housing or retaining member A; an anti-friction element proper B; and counterweights C.

The retaining member or housing A. is of substantially rectangular outline and has parallel, spaced end walls 13 and sidewalls 14, said housing also being provided with apertured lugs 2O extending laterally at the lower ends of thevertical walls whereby the housing may be riveted or otherwise suitably secured to the bolster. The side walls 14 f are flanged inwardly toward one yanother at their upper ends, as at 15. y

A bear-ing block 16 is arranged in place 1n the bottom of the retaining member in any suitable manner as by peening portions 23 of the lower edges ofthe end walls 13 against the beveled ends 22 of the bearing block. A hardened wear plate 17 may be arranged on the upper surface of the block 16, as shown. The sides of the bearing block 16 have integral lugs or pins 18 projecting outwardly therefrom to points closely adjacent the side walls v14, vthese lugs' projecting upwardly 'above the top face ofthe block 16 fsides,[as shownin Figure 2. e

rlhe anti-friction element B comprises a -true cylindrical portion adapted to roll backv and forth to either side of normal central position on the wear plate 17 `andmove's between the opposed side edgesv of the `flanges 15 and projects outwardly therebeyond. Thus the anti-friction element is prevented against endwise shifting, by the side flanges 15.

The counterweights C are formed integral with the bearing rollerproper and extend outwardly .from the ends thereof, one arranged within each of the guideways formed by. the side wal-ls and top ianges ofthe housing. The c'ounterweights.have recesses 19 opening` downwardly from the bottoms thereof, these recesses extending normally vertically when the roller is in central position and being of a size slightly greater lthan the diameter of the lugs 18, as shown in Figure 1, so as to normally be outlof vconltact therewith. These counterweights are eX- tended downwardly below theV rollery proper and also below the lugs 18 at opposite sides of the latter.' In the instance shown, the lugs 18 are made cylindrical and the recesses 19 are correspondingly formed so that their upper portions are semi-circular with tangent faces extending vertically downwardly from the semi-circular portions, the bottom most portions of t-he recesses 18 being downwardly ared or rounded ofi', as

ing of the roller B is 'prevented except for su-ch slight amount as is permitted due to .the working clearances'left between the lugs and the edges of the recesses to minimize any tendency -of frictional binding in the return of the roller. A

In assembling the parts, thel roller will first be mounted on the block and these parts then inserted within the housing after which the peening of the section 23 isV done, thereby providing a complete assembled unitary structure suitable for shipment and application without danger of the parts becoming displaced or lost. In this connection, it will be observed that the flanges 15 prevent removal of the roller through the top of the housing.

tion the bounding NvallszofA the recesses are 1 spaeed'.slightly from the opposed suraces Qf the alined` lugs. AVhen the bearing 1s brought into action by the vrelative movement' between thefbolsters, the anti -friction roller will be rolled to the dotted line position sho\vn assuming that the'bolster 10is moved to the left, and the counterweights will be tilted to the position-shown in dotted lines, in which position they are in unstable equilibrium. Ihen the pressure on the bearingis removed, the lanti-friction element B Willbe returnedto its normal central posi- Ytion under` the influence of gravity, dueto kthe counterbalancing action of the counter-V welghts C, lthese counterweights shdably engaging the lugs l8 during 'their kreturning "movement so that the'anti-riction member will be centered and normally kept in vits centered position by these lugs.

The lugs -or pins also serve to prevent bodily shifting of the anti-friction member longitudinally of its bearing surface, so that vthe Aanti-friction member is at all times able to travel its -fullV distance under load. The lugs l8do nottake any load whatever and r'are not supporting lugs but are merely cen.-

tering lugs to Ypositively prevent any bodily shifting of the anti-'friction element B in excess of the relatively slight working clearancerallowed between the lugs and cooperating counterweights. y 1

IV have herein shown and described what I now consider the preferred mannerof carrying out my invention, but the same is merely illustrative and I contemplate all changes and modiiications'that come within the scope of the .claims appended hereto.

I claim ing pin *and coact therewithtofcenter the roller as the latter returns'to normal'position underthe counter-'balancing linfluence of the counter-weights. Y

v2. In a side bearing, the combination with a. retaining membervprovidedv with side and end walls, said side wallshaving overhang ing upper .end portions; of an anti-rictQn element of a width to lit between said zoverhanging portions, said element being'provided with 'counterweight sections of greater width than the distancebetween said Over-v `hanging portions, each of said counterweight `sections being provided with an lopeningfnoryJnally extending vertically upward, said.ele nient being adapted to be inserted :through the open bottom of said'retainer; abearing member upon' which saidelement is adapted to move, said bearinggmember Abeing adapted to close the open bottom of said retainer; and being provided withlugsextending into -the openings in said counterweight sections;

and means for securing -saidbearing member friction bearing in assembled relation Y In Witness that I Claim :the fregoing I day of January, 1924.

. 1 STACY B. HASEI/IINE.

iISIS in positionto maintain' the parts of said anti- I have hereunto subscribedfmy.namethis 14th 

